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Screen goes black for a few seconds then returns every time I turn TV on?

eclipse01

eclipse01

macrumors 68030
Original poster
May 16, 2011
2,902
442
Eau Claire, WI
Is this normal? It never does it after it initially does it.

System details
-Apple TV 4K (1st Gen)
-Hooked to LG C1 TV
-Sonos 5.1 (Via eArc)
-Dolby Vision and all other options are enabled

let me know if this is normal or if more details are needed?

Thanks
 
eclipse01 said:
Is this normal? It never does it after it initially does it.

System details
-Apple TV 4K (1st Gen)
-Hooked to LG C1 TV
-Sonos 5.1 (Via eArc)
-Dolby Vision and all other options are enabled

let me know if this is normal or if more details are needed?

Thanks
Click to expand...
mine does the same, (second gen aTV 4k on a CX). It is almost like the Apple TV is changing input after turning on, even though the TV automatically does that.

I have a PS5 an if I turn that on sometimes the aTV "steals" input/focus.
 
diamond.g said:
mine does the same, (second gen aTV 4k on a CX). It is almost like the Apple TV is changing input after turning on, even though the TV automatically does that.

I have a PS5 an if I turn that on sometimes the aTV "steals" input/focus.
Click to expand...
Interesting, ok wasn't sure if there was a setting that would fix this that i maybe have wrong.
 
eclipse01 said:
Interesting, ok wasn't sure if there was a setting that would fix this that i maybe have wrong.
Click to expand...
yeah it is annoying because the audio takes a few seconds to come back so you lose what is being said if something was playing
 
StumpyBloke said:
I think you are referring to the audio dropout issue with some of the more recent LG OLEDs. This issue is a different one altogether.
Click to expand...
I am pretty sure the issue the OP is talking about is an LG one. Something to do with how LG is processing the CEC commands for turning on. Sadly if you are using eARC it appears you cannot turn CEC off. So the TV turns on to the aTV for input, then switches to the aTV input even though it doesn't need to.
 
I had this same problem with my LG OLED and resolved the problem by switching from the 2nd generation 4k (A2169) to a first generation 4K (A1842). No idea why that worked. Initially I had no issues with the 2nd generation but after a year or so the black pause started. Hope this helps.
 
Halon said:
I had this same problem with my LG OLED and resolved the problem by switching from the 2nd generation 4k (A2169) to a first generation 4K (A1842). No idea why that worked. Initially I had no issues with the 2nd generation but after a year or so the black pause started. Hope this helps.
Click to expand...
yeah, maybe its not set up the same? I am on a first gen 4K and its doing it.
 
This is most likely the result of HDCP 2.2 encryption handshaking on the HDMI. It can also be caused by which settings you have for "Match Content", "Match Dynamic Range" or "Match Frame Rate".
 
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eclipse01 said:
Is this normal? It never does it after it initially does it.

System details
-Apple TV 4K (1st Gen)
-Hooked to LG C1 TV
-Sonos 5.1 (Via eArc)
-Dolby Vision and all other options are enabled

let me know if this is normal or if more details are needed?

Thanks
Click to expand...
Do you have your ATV 4K set to never sleep? It's always on right?
 
kirbalo said:
This is most likely the result of HDCP 2.2 encryption handshaking on the HDMI. It can also be caused by which settings you have for "Match Content", "Match Dynamic Range" or "Match Frame Rate".
Click to expand...

It's pretty definitely not anything to do with HDCP. It seems much more likely that the initial start up is in the wrong colour space due to some EDID error, and then the set performs an HDMI resync to fix that each time.
 
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